Stealth questions

Couple of questions came up during my gameplay and I'm curious if folks here have already info on this

- Cloak and dagger : I'm trying a build that focus on going into stealth, but I'm facing a situation in which for a few seconds after I come out of stealth from cloak and dagger, if I use it again the monster shows an "immune" warning and I don't vanish in stealth again. Does anyone know if this is intended and if so for how long the monster is immune?

- Patience trait : Does anyone knows how much faster is the initiative regain vs the 0.75/s

When you attack out of stealth, you get a 3 second debuff called Revealed, in which you cannot enter stealth again. But you can chain things together as long as you don't attack. So like if you use Cloak and Dagger, then Hide in Shadows, it would keep you in stealth until Hide in Shadows runs out.

I only used Patience for a brief time while leveling, and found it to not be worth it.